181 lines
3.6 KiB
Ruby
181 lines
3.6 KiB
Ruby
module Mutant
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# Abstract base class for mutant environments
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class Env
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include Adamantium::Flat, Concord::Public.new(:config, :cache)
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SEMANTICS_MESSAGE =
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"Fix your lib to follow normal ruby semantics!\n" \
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'{Module,Class}#name should return resolvable constant name as String or nil'.freeze
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# Return new env
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#
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# @param [Config] config
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#
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# @return [Env]
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#
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# @api private
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#
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def self.new(config, cache = Cache.new)
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super(config, cache)
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end
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# Initialize env
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#
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# @return [undefined]
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#
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# @api private
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#
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def initialize(*)
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super
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infect
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initialize_matchable_scopes
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initialize_subjects
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initialize_mutations
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end
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# Print warning message
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#
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# @param [String]
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#
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# @return [self]
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#
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# @api private
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#
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def warn(message)
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config.reporter.warn(message)
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self
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end
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# Return subjects
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#
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# @return [Array<Subject>]
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#
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# @api private
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#
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attr_reader :subjects
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# Return mutations
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#
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# @return [Array<Mutation>]
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#
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# @api private
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#
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attr_reader :mutations
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# Return all usable match scopes
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#
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# @return [Array<Matcher::Scope>]
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#
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# @api private
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#
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attr_reader :matchable_scopes
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# Kill mutation
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#
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# @param [Mutation] mutation
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#
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# @return [Result::Mutation]
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#
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# @api private
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#
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def kill_mutation(mutation)
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test_result = mutation.kill(config.isolation, config.integration)
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Result::Mutation.new(
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mutation: mutation,
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test_result: test_result
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)
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end
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private
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# Return scope name
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#
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# @param [Class, Module] scope
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#
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# @return [String]
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# if scope has a name and does not raise exceptions obtaining it
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#
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# @return [nil]
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# otherwise
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#
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# @api private
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#
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# rubocop:disable LineLength
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#
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def scope_name(scope)
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scope.name
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rescue => exception
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warn("#{scope.class}#name from: #{scope.inspect} raised an error: #{exception.inspect}. #{SEMANTICS_MESSAGE}")
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nil
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end
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# Try to turn scope into expression
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#
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# @param [Class, Module] scope
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#
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# @return [Expression]
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# if scope can be represented in an expression
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#
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# @return [nil]
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# otherwise
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#
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# @api private
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#
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def expression(scope)
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name = scope_name(scope) or return
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unless name.instance_of?(String)
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warn("#{scope.class}#name from: #{scope.inspect} returned #{name.inspect}. #{SEMANTICS_MESSAGE}")
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return
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end
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Expression.try_parse(name)
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end
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# Initialize subjects
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#
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# @return [undefined]
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#
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# @api private
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#
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def initialize_subjects
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@subjects = Matcher::Compiler.call(self, config.matcher_config).to_a
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end
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# Initialize mutations
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#
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# @return [undefined]
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#
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# @api private
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#
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def initialize_mutations
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@mutations = subjects.flat_map(&:mutations)
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end
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# Infect environment
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#
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# @return [undefined]
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#
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# @api private
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#
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def infect
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config.includes.each(&$LOAD_PATH.method(:<<))
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config.requires.each(&method(:require))
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end
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# Initialize matchable scopes
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#
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# @return [undefined]
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#
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# @api private
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#
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def initialize_matchable_scopes
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@matchable_scopes = ObjectSpace.each_object(Module).each_with_object([]) do |scope, aggregate|
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expression = expression(scope)
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aggregate << Matcher::Scope.new(self, scope, expression) if expression
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end.sort_by(&:identification)
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end
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end # Env
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end # Mutant
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